“Trail!” is the standard right-of-way call in mushing, shouted by a musher who is approaching a slower team from behind and wishes to pass. When a musher hears “trail!” called from behind, the expected etiquette is to pull their team to the side and allow the overtaking team to pass safely.
This convention is essential for safety on narrow trails where two teams cannot easily run side by side. In sled dog racing, trail rules are formalized in race regulations. Typically, the team being overtaken must yield within a reasonable distance, and the passing team must complete the pass cleanly without interfering with the yielding team’s dogs.
The call is usually given with enough advance warning for the forward team to find a suitable wide spot to pull over. On very narrow trails, this may require the yielding musher to stop their team entirely and use a snow hook to hold them in place while the passing team goes by. Proper trail etiquette is a cornerstone of mushing culture, and experienced mushers teach newcomers these conventions early. Failing to yield when “trail” is called is considered poor sportsmanship and can result in penalties during organized races.